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Product of the Day
€3.84
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€86.71
€70.49
Coupling 3" NPT Class 3000 Stainless Steel 304L (1.4301)
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Description
Coupling 3" NPT Class 3000 Stainless Steel 304L (1.4301)
- Size: 3" (thread diameter: 84.7–85.1 mm)
- Thread type: NPT (tapered thread)
- Material: 304L stainless steel (1.4301)
- Pressure class: Class 3000 (206 bar)
- Dimension W: 108 mm
- Dimension D: 108 mm
- Heavy-wall high-pressure coupling
- 3.1 material certificate available on request (free of charge)
- Origin: European Union


Alternative Name
Coupling 3" NPT Class 3000 Stainless Steel 304L (1.4301), Heavy-Wall High-Pressure Coupling, Stainless Steel Threaded Coupling, NPT Female Coupling, SS304L Coupling, High-Pressure Coupling
Information
The 3" NPT Class 3000 Coupling is manufactured from 304L stainless steel (1.4301) and is designed for high-pressure threaded piping systems. Its heavy-wall construction provides excellent mechanical strength and allows safe operation at pressures up to 206 bar.
The fitting features female NPT tapered threads on both ends, ensuring secure and leak-tight threaded connections for demanding industrial applications. Manufactured from corrosion-resistant stainless steel, it offers long service life even in aggressive environments.
Material
304 / 304L stainless steel is the most widely used austenitic stainless steel. It combines excellent corrosion resistance with outstanding formability and weldability, making it suitable for a broad range of industrial applications.
Equivalent material designations include:
- 1.4301
- 1.4306
- 1.4307
- AISI 304L
Advantages
- Stainless steel (inox)
- Heavy-wall construction
- Female NPT tapered threads
- Pressure class: Class 3000 (206 bar)
- Excellent corrosion resistance
- Excellent weldability
- High mechanical strength
- 3.1 material certificate available on request
Applications
Heat exchangers, pharmaceutical equipment, dairy installations, breweries, marine fittings, coastal structures, food processing, pressure piping systems, and industrial process installations.
We also offer NPT stainless steel couplings in many other sizes. If you have any questions, please contact us. Call +48 63 261 42 02 or email biuro@polberis.pl.
Learn more about our threaded couplings here >>
Technical data
| Coupling Type | Coupling |
| Material | Stainless Steel |
| Pressure | Pressure Range 101–250 bar |
| Connection 1 | 3'' |
| Thread Type – Connection 1 | NPT Thread |
| Connection 2 | 3'' |
| Thread Type – Connection 2 | NPT Thread |
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